Polarization properties of photon Bose-Einstein condensates

• URL: http://arxiv.org/abs/2506.06141v1
• Date: Fri, 06 Jun 2025 14:58:58 GMT
• Title: Polarization properties of photon Bose-Einstein condensates
• Authors: Sven Enns, Julian Schulz, Kirankumar Karkihalli Umesh, Frank Vewinger, Georg von Freymann,
• Abstract summary: We experimentally investigate the polarization of thermal and condensed light depending on the power and polarization of the pump beam.<n>With full control over the polarization of the pump, it is possible to create arbitrary states on the surface of the Poincar'e sphere.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The first experimental realization of a photon Bose-Einstein condensate was demonstrated more than a decade ago. However, the polarization of the condensate has not been fully understood and measured in this weakly driven-dissipative system. In this letter, we experimentally investigate the polarization of thermal and condensed light depending on the power and polarization of the pump beam. With full control over the polarization of the pump, it is possible to create arbitrary states on the surface of the Poincar\'e sphere. We show that, in agreement with previous theoretical work, there is a remarkable increase in the polarization strength of the condensate above the threshold for a fully linearly polarized pump. Above a certain threshold also the degenerate orthogonal polarized state of the cavity is occupied, limiting the degree of polarization to approximately 90%.

Related papers

• Polaritonic Coupled Cluster Theory for Unpolarized Cavities Exploiting Point Group Symmetry [0.0]
  We introduce a generalization of the quantum electrodynamic coupled cluster (QED-CC)wave function ansatz.<n>We describe the strongly coupled light-matter system in an unpolarized optical Fabry-P'erot cavity.<n>Using our implementation, the aromatic species benzene, fluorobenzene and azulene are investigated.
  arXiv  Detail & Related papers  (2025-07-25T11:42:54Z)
• Wavevector-resolved polarization entanglement from radiative cascades [27.84599956781646]
  We show that there exists an interplay between photon polarization and emission wavevector, strongly affecting quantum correlations when emitters are embedded in micro-cavities. Our results, backed by theoretical modelling, yield a brand-new understanding of cascaded emission for various quantum emitters.
  arXiv  Detail & Related papers  (2024-09-12T09:32:29Z)
• Bound polariton states in the Dicke-Ising model [41.94295877935867]
  We present a study of hybrid light-matter excitations in cavity QED materials.<n>We derive the exact excitations of the system in the thermodynamic limit.
  arXiv  Detail & Related papers  (2024-06-17T18:00:01Z)
• Raman-phonon-polariton condensation in a transversely pumped cavity [44.99833362998488]
  We suggest a new approach to realising phonon polaritons, by employing a transverse-pumping Raman scheme. We show that such a system may realise a phonon-polariton condensate.
  arXiv  Detail & Related papers  (2024-05-08T17:59:31Z)
• Non-Reciprocity in Photon Polarization based on direction of polarizer under Gravitational Fields [0.0]
  We show that non-reciprocity in the photon polarization angle can arise by tailoring the quantization axis. We propose an astronomical interferometer composed of satellites with the tailored quantization axis.
  arXiv  Detail & Related papers  (2023-09-21T13:36:23Z)
• Theory of exciton-polariton condensation in gap-confined eigenmodes [0.0]
  Exciton-polaritons are bosonic-like elementary excitations in semiconductors. polariton condensation can also occur in gap-confined bright modes.
  arXiv  Detail & Related papers  (2023-06-04T06:59:45Z)
• Wall-Collision Effect on Optically-Polarized Atoms in Small and Hot Vapor Cells [31.924511690025476]
  In atomic vapor cells, atoms collide with the inner surface, causing their spin to randomize on the walls. This wall-depolarizing effect is diffusive, and it becomes more pronounced in smaller vapor cells under high temperatures. We investigate the polarization of optically-pumped alkali-metal atoms in a millimeter-sized cell heated to $% 150 $ Celsius.
  arXiv  Detail & Related papers  (2023-05-19T08:04:34Z)
• Polarization dynamics of solid-state quantum emitters [32.54627168659622]
  Quantum emitters in solid-state crystals have attracted a lot of attention due to their simple applicability in optical quantum technologies. polarization of single photons generated by quantum emitters is one of the key parameters that play a crucial role in the applications.
  arXiv  Detail & Related papers  (2023-03-08T17:18:15Z)
• Quantum Fluctuations and Coherence of a Molecular Polariton Condensate [0.5801044612920816]
  A full quantum theory is developed for an exciton polariton condensate. The polariton nonlinearity causing fast relaxation correlated with the pump so as to yield the condensation at threshold. The results signify the role of dark states for polariton fluctuations, and lead to a nonclassical counting statistics of emitted photons.
  arXiv  Detail & Related papers  (2022-04-28T14:27:05Z)
• Exact analytical solution for density matrix of a non-equilibrium polariton Bose-Einstein condensate [0.0]
  We find the density matrix of a non-equilibrium polariton Bose-Einstein condensate (BEC) Despite the non-equilibrium nature of polariton systems, we show the average population of polariton states exhibits the Bose-Einstein distribution with an almost zero effective chemical potential above the condensation threshold similar to an equilibrium BEC.
  arXiv  Detail & Related papers  (2021-05-06T20:29:01Z)
• Demonstration of dipolar-induced enhancement of parametric effects in polariton waveguides [40.96261204117952]
  Exciton-polaritons are hybrid light-matter excitations arising from the non-fluidative coupling of a photonic mode and an excitonic resonance. We show that dipolar interactions can be used to enhance parametric effects such as self-phase modulation in waveguide polaritons.
  arXiv  Detail & Related papers  (2020-05-22T20:45:31Z)
• Parallel dark soliton pair in a bistable 2D exciton-polariton superfluid [47.187609203210705]
  2D dark solitons are unstable and collapse into vortices due to snake instabilities. We demonstrate that a pair of dark solitons can be formed in the wake of an obstacle in a polariton flow resonantly supported by a homogeneous laser beam.
  arXiv  Detail & Related papers  (2020-03-25T13:52:22Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.